package com.itheima.auth;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
//登入失败后的返回
public class MyAuthenticationFailureHandler implements AuthenticationFailureHandler {

	@Override
	public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
                                        AuthenticationException exception) throws IOException, ServletException {
		response.setContentType("application/json;charset=UTF-8");
		response.setCharacterEncoding("utf-8");
		String result = "{\n" +
				"\n" +
				"\"flag\":false,\n" +
				"\n" +
				"\"data\":\"\",\n" +
				"\n" +
				"\"message\":\""+exception.getMessage()+"\"\n" +
				"\n" +
				"}";
		response.getWriter().write(result);
	}

}
